http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
Complete trisomy 14 mosaicism: first live-born case in Korea
허윤정,Taegyu Hwang 대한소아청소년과학회 2012 Clinical and Experimental Pediatrics (CEP) Vol.55 No.10
Trisomy 14 mosaicism is a rare chromosome disorder characterized by delayed development, failure to thrive, and facial dysmorphism. Only approximately 30 trisomy 14 mosaicism cases have been reported in the literature because trisomy 14 is associated with early spontaneous abortion. We report a case of a 17-month-old girl with abnormal skin pigmentation, delayed development, facial dysmorphism, and failure to thrive with the 47,XX,+14/46,XX chromosome complement.
A MEMS methanol reformer heated by decomposition of hydrogen peroxide
Kim, Taegyu,Hwang, Jin Soo,Kwon, Sejin Royal Society of Chemistry 2007 Lab on a chip Vol.7 No.7
<P>This paper presents the design, fabrication and evaluation of a micro methanol reformer complete with a heat source. The micro system consists of the steam reforming reactor of methanol, the catalytic decomposition reactor of hydrogen peroxide, and a heat exchanger between the two reactors. In the present study, catalytic decomposition of hydrogen peroxide is used as a process to supply heat to the reforming reactor. The decomposition process of hydrogen peroxide produces water vapor and oxygen as a product that can be used efficiently to operate the reformer/PEMFC system. Cu/ZnO was selected as a catalyst for methanol steam reforming and Pt for the decomposition of hydrogen peroxide. Incipient wetness method was used to load catalysts on a porous support. Catalyst loaded supports were inserted in the cavity made on the glass wafer. The performance of the methanol steam reforming system was measured at various test conditions and the optimum operation condition was sought. At the optimum condition, the hydrogen selectivity was 86.4% and the thermal efficiency was 44.8%. The product gas included 74.1% H<SUB>2</SUB>, 24.5% CO<SUB>2</SUB> and 1.4% CO and the total volume production rate was 23.5 ml min<SUP>−1</SUP>. This amount of hydrogen can produce 1.5 W of power on a typical PEMFC.</P> <P>Graphic Abstract</P><P>This paper presents the design, fabrication and evaluation of a micro methanol reformer complete with a heat source. At the optimum condition, the hydrogen selectivity was 86.4% and the thermal efficiency was 44.8%. <IMG SRC='http://pubs.rsc.org/services/images/RSCpubs.ePlatform.Service.FreeContent.ImageService.svc/ImageService/image/GA?id=b700040e'> </P>